What treatment option can be used effectively in attics to combat fabric pests?

Using dusts in attics to combat fabric pests is highly effective due to a few key reasons. Dust formulations contain insecticides that adhere to surfaces and provide long-lasting residual control. When applied in the attic, they can settle into cracks, crevices, and other areas where fabric pests may hide or breed, delivering a targeted treatment that is less prone to being disturbed compared to liquid sprays.

Dusts are particularly advantageous in situations that require minimal disturbance, like attics, because they can remain effective over a longer period. The small particles of dust cling to surfaces and the pests themselves, providing effective control even in hard-to-reach areas.

In contrast, while liquid sprays can also be used to treat fabric pests, they often require more frequent applications due to their less persistent nature and greater chances of being washed away or drifted by airflow. Granular baits are typically designed for specific target pests, particularly those that are not fabric pests, and thus are not suitable for this scenario. Fumigation, although effective for severe infestations, is usually reserved for larger areas, like entire buildings or storage facilities, rather than confined spaces like attics due to its complexity and safety requirements.